IDT74FCT16245ETEG [IDT]
Bus Transceiver, FCT Series, 2-Func, 8-Bit, True Output, CMOS, CDFP48, 0.635 MM PITCH, CERPACK-48;
| 型号： | IDT74FCT16245ETEG |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Transceiver, FCT Series, 2-Func, 8-Bit, True Output, CMOS, CDFP48, 0.635 MM PITCH, CERPACK-48 CD 逻辑集成电路 |
| 文件： | 总7页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FAST CMOS 16-BIT
BIDIRECTIONAL
IDT54/74FCT16245T/AT/CT/ET
TRANSCEIVER
DESCRIPTION:
FEATURES:
−
−
−
−
−
0.5 MICRON CMOS Technology
High-speed, low-power CMOS replacement for ABT functions
Typical tSK(o) (Output Skew) < 250ps
Low input and output leakage ≤ 1µA (max.)
ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
25 mil pitch SSOP, 19.6 mil pitch TSSOP, 15.7 mil pitch TVSOP
and 25 mil pitch CERPACK packages
Extended commercial range of -40°C to +85°C
High drive outputs (-32mA IOH, 64mA IOL)
Power off disable outputs permit “live insertion”
Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA =
25°C
The FCT16245T16-bittransceiveris builtusingadvanceddualmetal
CMOS technology. These high-speed, low-powertransceivers are ideal
for synchronous communication between two busses (A and B). The
DirectionandOutputEnable controls operate these devices as eithertwo
independent 8-bit transceivers or one 16-bit transceiver. The direction
controlpin(xDIR)controls thedirectionofdataflow.Theoutputenablepin
(xOE)overridesthedirectioncontrolanddisablesbothports.Allinputsare
designedwithhysteresis forimprovednoise margin.
−
−
−
−
−
TheFCT16245Tisideallysuitedfordrivinghigh-capacitanceloadsand
low-impedancebackplanes.Theoutputbuffersaredesignedwithpoweroff
disablecapabilitytoallow"liveinsertion"ofboardswhenusedasbackplane
drivers.
FUNCTIONALBLOCKDIAGRAM
1 DIR
2 DIR
1OE
1B1
1B2
1B3
1B4
2OE
1A1
1A2
2A1
2B1
2A2
2B2
1A3
1A4
2A3
2B3
2A4
2B4
1A5
1A6
2A5
1B5
1B6
2B5
2A6
2B6
1A7
1A8
2A7
1B7
1B8
2B7
2A8
2B8
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AUGUST 1999
1
c
1999 Integrated Device Technology, Inc.
DSC-5456/-
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
PINCONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
Unit
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1DIR
1B1
1OE
(2)
VTERM
Terminal Voltage with Respect to GND
–0.5 to +7
V
(3)
VTERM
Terminal Voltage with Respect to GND –0.5 to VCC+0.5
V
2
1A1
TSTG
IOUT
Storage Temperature
DC Output Current
–65 to +150
–60 to +120
°C
3
1B2
1A2
mA
5v16-link
GND
4
GND
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
5
1B3
1A3
6
1B4
1A4
VCC
7
VCC
2. All device terminals except FCT162XXXT and FCT166XXXT (APort)
8
1B5
1A5
Output and I/O terminals.
3. Output and I/O terminals for FCT162XXXT and FCT166XXXT (A-Port).
9
1B6
1A6
O
CAPACITANCE
Symbol
(TA = +25 C, f = 1.0MHz)
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
GND
Parameter(1)
Conditions
Typ.
Max. Unit
1B7
1B8
2B1
1A7
1A8
2A1
CIN
Input Capacitance
VIN = 0V
3.5
6
8
pF
COUT
Output Capacitance
VOUT = 0V
3.5
pF
5v16-link
SO48-1
SO48-2
SO48-3
E48-1
NOTE:
1. This parameter is measured at characterization but not tested.
2B2
2A2
GND
GND
PIN DESCRIPTION
Pin Names
Description
2B3
2A3
xOE
Output Enable Input (Active LOW)
2B4
2A4
xDIR
xAx
xBx
Direction Control Input
VCC
VCC
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
2B5
2A5
2B6
2A6
GND
GND
FUNCTION TABLE(1)
2B7
2B8
2A7
2A8
2OE
Inputs
xOE
L
xDIR
L
Outputs
Bus B Data to Bus A
2DIR
L
H
Bus A Data to Bus B
HighZState
SSOP/ TSSOP/ TVSOP/ CERPACK
TOP VIEW
H
X
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
2
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: TA = -40°C to +85°C, VCC = 5.0V ±10%; Military: TA = -55°C to +125°C, VCC = 5.0V ±10%
Symbol
Parameter
Input HIGH Level
Test Conditions(1)
Guaranteed Logic HIGH Level
Min.
Typ.(2) Max.
Unit
VIH
2
—
—
—
0.8
±1
V
VIL
IIH
Input LOW Level
Input HIGH Current (Input pins)(5)
Guaranteed Logic LOW Level
VCC = Max.
—
—
—
—
—
—
—
—
–80
—
—
V
VI = VCC
—
µA
(5)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)(5)
—
±1
IIL
VI = GND
—
±1
(5)
Input LOW Current (I/O pins)
—
±1
IOZH
IOZL
VIK
IOS
High Impedance Output Current
(3-State Output pins)(5)
Clamp Diode Voltage
VCC = Max.
VO = 2.7V
VO = 0.5V
—
±1
µA
—
±1
VCC = Min., IIN = –18mA
–0.7
–140
100
5
–1.2
–250
—
V
(3)
Short Circuit Current
VCC = Max., VO = GND
mA
mV
µA
VH
Input Hysteresis
—
ICCL
ICCH
ICCZ
Quiescent Power Supply Current
VCC = Max.
VIN = GND or VCC
500
5v16-link
OUTPUT DRIVE CHARACTERISTICS
Symbol
Parameter
Output Drive Current
Test Conditions(1)
(3)
Min.
Typ.(2) Max.
Unit
IO
VCC = Max., VO = 2.5V
–50
—
3.5
3.5
–180
—
mA
VOH
Output HIGH Voltage
VCC = Min.
IOH = –3mA
2.5
2.4
V
V
VIN = VIH or VIL
IOH = –12mA MIL
IOH = –15mA COM’L
IOH = –24mA MIL
—
2
3
—
0.55
±1
V
V
(4)
IOH = –32mA COM’L
IOL = 48mA MIL
VOL
IOFF
Output LOW Voltage
VCC = Min.
—
—
0.2
—
VIN = VIH or VIL
IOL = 64mA COM’L
Input/Output Power Off Leakage(5)
VCC = 0V, VIN or VO ≤ 4.5V
µA
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Duration of the condition can not exceed one second.
5. The test limit for this parameter is ±5µA at TA = -55°C.
3
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
POWERSUPPLYCHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
∆ICC
QuiescentPowerSupplyCurrent
TTL Inputs HIGH
Vcc = Max.
VIN = 3.4V
—
0.5
1.5
mA
(3)
ICCD
IC
Dynamic Power Supply Current(4)
Vcc = Max.
OutputsOpen
xOE = xDIR = GND
OneInputToggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
60
100
µA/
MHz
TotalPowerSupplyCurrent(6)
Vcc = Max.
OutputsOpen
fi = 10MHz
50% Duty Cycle
xOE = xDIR = GND
OneBitToggling
VIN = VCC
VIN = GND
—
—
0.6
0.9
1.5
2.3
mA
VIN = 3.4V
VIN = GND
Vcc = Max.
OutputsOpen
fi = 2.5MHz
50% Duty Cycle
xOE = xDIR = GND
VIN = VCC
VIN = GND
—
—
2.4
6.4
4.5(5)
(5)
VIN = 3.4V
VIN = GND
16.5
SixteenBitsToggling
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCPNCP/2 + fiNi)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fi = Input Frequency
Ni = Number of Inputs at fi
4
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT16245T
FCT16245AT
Com'l.
Max
Mil.
Com'l.
Max
Mil.
Symbol
tPLH
tPHL
tPZH
tPZL
Parameter
Propagation Delay
A to B, B to A
Condition(1)
CL = 50pF
RL = 500Ω
Min (2)
Min (2)
.
Max
Min (2)
Min (2)
.
Max
.
Unit
.
.
.
.
.
1.5
7
1.5
1.5
1.5
1.5
1.5
—
7.5
10
10
10
10
0.5
1.5
4.6
6.2
5
1.5
1.5
1.5
1.5
1.5
—
4.9
6.5
6
ns
Output Enable Time
xOE to A or B
1.5
1.5
1.5
1.5
—
9.5
7.5
9.5
7.5
0.5
1.5
1.5
1.5
1.5
—
ns
ns
ns
ns
ns
tPHZ
tPLZ
Output Disable Time
xOE to A or B
tPZH
tPZL
Output Enable Time
6.2
5
6.5
6
(4)
xDIR to A or B
tPHZ
tPLZ
Output Disable Time
(4)
xDIR to A or B
(3)
tSK(o) Output Skew
0.5
0.5
FCT16245CT
FCT16245ET
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
Propagation Delay
A to B, B to A
Condition(1)
CL = 50pF
RL = 500Ω
Min (2)
.
Max
Min (2)
.
Max
Min (2)
.
Max
Min (2)
.
Max
.
Unit
.
.
.
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
1.5
1.5
1.5
1.5
1.5
—
4.1
5.8
4.8
5.8
4.8
0.5
1.5
1.5
1.5
1.5
1.5
—
4.5
6.2
5.2
6.2
5.2
0.5
1.5
1.5
1.5
1.5
1.5
—
3.2
4.4
4
—
—
—
—
—
—
—
—
—
—
—
—
ns
Output Enable Time
xOE to A or B
ns
ns
ns
ns
ns
Output Disable Time
xOE to A or B
Output Enable Time
4.8
4
(4)
xDIR to A or B
Output Disable Time
(4)
xDIR to A or B
(3)
tSK(o) Output Skew
0.5
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
4. This parameter is guaranteed but not tested.
5
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
TESTCIRCUITSANDWAVEFORMS
SWITCH POSITION
TEST CIRCUITS FOR ALL OUTPUTS
Test
Switch
Closed
Open
V CC
7.0V
Open Drain
Disable Low
Enable Low
All Other Tests
500Ω
500Ω
VOUT
VIN
Pulse
Generator
D.U.T.
5v16-link
DEFINITIONS:
50pF
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
T
R
L
C
SET-UP, HOLD, AND RELEASE TIMES
PULSEWIDTH
3V
1.5V
0V
DATA
INPUT
LOW-HIGH-LOW
tH
tSU
1.5V
PULSE
3V
1.5V
0V
TIMING
INPUT
tW
ASYNCHRONOUS CONTROL
tREM
PRESET
3V
CLEAR
ETC.
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
SYNCHRONOUS CONTROL
PRESET
3V
1.5V
0V
CLEAR
CLOCK ENABLE
ETC.
tSU
tH
ENABLEANDDISABLETIMES
PROPAGATIONDELAY
ENABLE
DISABLE
3V
3V
SAME PHASE
INPUT TRANSITION
1.5V
0V
CONTROL
INPUT
1.5V
0V
tPLH
tPHL
tPHL
tPZL
tPLZ
VOH
1.5V
VOL
OUTPUT
3.5V
1.5V
3.5V
VOL
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
tPLH
0.3V
0.3V
3V
tPZH
tPHZ
OPPOSITE PHASE
INPUT TRANSITION
1.5V
0V
VOH
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
1.5V
0V
0V
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
6
IDT54/74FCT16245T/AT/CT/ET
FASTCMOS16-BITBIDIRECTIONALTRANSCEIVER
MILITARYANDCOMMERCIALTEMPERATURERANGES
ORDERINGINFORMATION
IDT
XX
FCT
XX
XXXX
XX
X
X
Temp. Range
Family Bus Hold
Device Type
Package
Process
Commercial
Blank
MIL-STD-883, Class B
B
Shrink Small Outline Package (SO48-1)
Thin Shrink Small Outline Package (SO48-2)
Thin Very Small Outline Package (SO48-3)
CERPACK (E48-1)
PV
PA
PF
E
16-Bit Bidirectional Transceiver
245T
245AT
245CT
245ET
Blank
16
No Bus-Hold
Double-Density, 5 Volt, High Drive
–55°C to +125°C
–40°C to +85°C
54
74
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The IDT logo is a registered trademark of Integrated Device Technology, Inc.
7
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